What is CVE-2026-50519?

CVE-2026-50519 is a medium-severity vulnerability in Microsoft Github Copilot Chat, classified under Initialization of a Resource with an Insecure Default. CVSS score: 6.5/10. Published 2026-06-19.

How severe is CVE-2026-50519?

Medium severity. CVSS v3 base score is 6.5 out of 10.

RCE in Microsoft Github Copilot Chat

CVE-2026-50519

Initialization of a resource with an insecure default in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to disclose information over a network.

EPSS: 0.005 (40.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Microsoft Github Copilot Chat — versions 1.0.0
Microsoft Github_copilot_chat

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

References

Microsoft Visual Studio Code CoPilot Chat Security Feature Bypass Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-50519?: CVE-2026-50519 is a medium-severity vulnerability in Microsoft Github Copilot Chat, classified under Initialization of a Resource with an Insecure Default. CVSS score: 6.5/10. Published 2026-06-19.
How severe is CVE-2026-50519?: Medium severity. CVSS v3 base score is 6.5 out of 10.